Token Ownership transfer

Use this helper to transfer ownership of a mintable token you currently have ownership of.
This does not change any token balance.
The token ownership will be transfered to the recipient: He will be able to mint the token and you'll lose this right.
A mintable token can only have a single owner at a time
The recipient of the transaction is the ownership recipient.
If you send an invalid transaction, the token ownership would be untouched.
Uppercase, A..Z 0..9 _ Only. Minimum 3 chars.
The sender address, raw or id__. You can leave it empty, but the ownership test will then be ignored.

The recipient address, raw or id__.